- This event has passed.
It is a time of change, with the departure of winter visitors and arrival of summer migrants.
Spring migration is the mass movement of birds toward their breeding grounds, it happens with predictable timing each year. The precise local timing varies, of course, with latitude and elevation. “Early spring” might mean early February in the southernmost states, late March or early April in the north, or even May in the far north and high mountains.
For more information about spring migration click here